{"id":138651,"date":"2025-12-12T17:17:33","date_gmt":"2025-12-12T11:47:33","guid":{"rendered":"https:\/\/www.pranaair.com\/blog\/?p=138651"},"modified":"2025-12-12T17:32:55","modified_gmt":"2025-12-12T12:02:55","slug":"how-an-aqi-monitor-works","status":"publish","type":"post","link":"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/","title":{"rendered":"How an AQI Monitor Works: A Closer Look at Prana Air Technology"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #161616;color:#161616\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #161616;color:#161616\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#1_Sensors_The_foundation_of_accurate_air_measurement\" >1. Sensors: The foundation of accurate air measurement<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Particulate_matter_sensors\" >Particulate matter sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Gas_and_chemical_sensors\" >Gas and chemical sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Environmental_sensors\" >Environmental sensors<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#2_Turning_measurements_into_meaningful_information\" >2. Turning measurements into meaningful information<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#3_Calibration_Ensuring_accuracy_over_time\" >3. Calibration: Ensuring accuracy over time<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Factory_calibration\" >Factory calibration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Environmental_adjustments_during_use\" >Environmental adjustments during use<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Field_calibration_for_advanced_applications\" >Field calibration for advanced applications<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#4_Connectivity_Making_air_quality_information_accessible\" >4. Connectivity: Making air quality information accessible<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.pranaair.com\/blog\/how-an-aqi-monitor-works\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Understanding <strong>how an AQI monitor works<\/strong> has become increasingly important as air pollution affects daily life in India. PM2.5, gases and humidity levels change constantly inside homes and workplaces. Prana Air\u2019s monitoring devices help users see these changes by turning invisible pollutants into clear information. To understand how these devices deliver accurate readings, it helps to explore the sensors, internal processing and calibration behind them.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-1-sensors-the-foundation-of-accurate-air-measurement\"><span class=\"ez-toc-section\" id=\"1_Sensors_The_foundation_of_accurate_air_measurement\"><\/span>1. Sensors: The foundation of accurate air measurement<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Reliable air quality monitoring begins with sensors. These components detect pollutants, environmental conditions and chemical activity in the air. Prana Air uses high-quality sensors designed to perform well across Indian climatic conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-particulate-matter-sensors\"><span class=\"ez-toc-section\" id=\"Particulate_matter_sensors\"><\/span>Particulate matter sensors<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Devices such as the Pocket PM2.5 Monitor, Cair Plus and Sensible use light-based technology to measure PM2.5 and PM10. These particles originate from dust, traffic, construction, cooking and combustion. PM2.5 is especially harmful because it can reach deep inside the lungs.<\/p>\n\n\n\n<p>Inside the device, air enters a sensing chamber where a beam of light illuminates the particles. As particles move through the beam, they scatter light. A detector measures this scattering pattern and the device calculates particulate concentration from this interaction. This method offers dependable real-time detection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-gas-and-chemical-sensors\"><span class=\"ez-toc-section\" id=\"Gas_and_chemical_sensors\"><\/span><strong>Gas and chemical sensors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Indoor spaces often contain gases that are not visible. Prana Air monitors detect CO\u2082, TVOCs, formaldehyde, CO and in advanced models gases such as NO\u2082, SO\u2082 and O\u2083. These sensors work by generating electrical signals when gas molecules interact with the sensing surface. The monitor interprets these signals to determine gas concentration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-environmental-sensors\"><span class=\"ez-toc-section\" id=\"Environmental_sensors\"><\/span>Environmental sensors<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Temperature and humidity influence how sensors behave. Prana Air includes environmental sensors to maintain stable and accurate readings across different seasons and conditions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"723\" src=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/prana-air-sensors-1-1.png\" alt=\"\" class=\"wp-image-138695\" style=\"width:960px;height:auto\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/prana-air-sensors-1-1.png 800w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/prana-air-sensors-1-1-300x271.png 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/prana-air-sensors-1-1-768x694.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-turning-measurements-into-meaningful-information\"><span class=\"ez-toc-section\" id=\"2_Turning_measurements_into_meaningful_information\"><\/span>2. Turning measurements into meaningful information<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Learning <strong>how an AQI monitor works<\/strong> also means understanding how raw sensor readings become usable data. Sensors generate electrical signals that cannot be interpreted directly. Prana Air\u2019s internal system converts these signals into pollutant concentrations that accurately reflect what is present in the air.<\/p>\n\n\n\n<p>The device begins by converting electrical outputs into standard scientific units. For particulate matter, readings become micrograms per cubic meter. For gases, values are expressed in parts per million or parts per billion. These conversions follow calibration curves developed through controlled laboratory and field testing.<\/p>\n\n\n\n<p>Environmental factors such as temperature and humidity are included in the calculation because they influence sensor behaviour. By accounting for these conditions, the monitor maintains stable measurements across different indoor environments and seasons.<\/p>\n\n\n\n<p>Once pollutant concentrations are ready, the device applies the CPCB AQI formula to determine the final AQI number. Each pollutant is translated into a sub-index and the highest value becomes the overall AQI displayed. In most Indian settings, PM2.5 is usually the pollutant that drives this number.<\/p>\n\n\n\n<p>This entire process ensures that the readings shown on a Prana Air monitor are clear, reliable and representative of real-time air quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-3-calibration-ensuring-accuracy-over-time\"><span class=\"ez-toc-section\" id=\"3_Calibration_Ensuring_accuracy_over_time\"><\/span>3. Calibration: Ensuring accuracy over time<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Calibration is important because sensors naturally shift with time and environmental exposure. Prana Air maintains accuracy through several calibration steps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Factory_calibration\"><\/span><strong>Factory calibration<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Each sensor is calibrated against reference-grade instruments before it is installed in a device. This creates a consistent accuracy baseline.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Environmental_adjustments_during_use\"><\/span><strong>Environmental adjustments during use<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>As the device is used, it experiences changes in temperature, humidity and airflow. Prana Air\u2019s firmware includes correction mechanisms that help maintain stable readings without affecting the real-time nature of the measurements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Field_calibration_for_advanced_applications\"><\/span><strong>Field calibration for advanced applications<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>For research, industrial use or smart city deployments, Prana Air supports field calibration. Devices can be compared with reference stations or laboratory samplers to achieve high precision when required.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-4-connectivity-making-air-quality-information-accessible\"><span class=\"ez-toc-section\" id=\"4_Connectivity_Making_air_quality_information_accessible\"><\/span>4. Connectivity: Making air quality information accessible<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Prana Air devices offer convenient access to air quality data. With <strong>Wi-Fi, GSM and RS-485 connectivity<\/strong>, users can view real-time pollutant levels and long-term trends through the <strong>AQI Dashboard<\/strong> and the <strong>AQI Mobile App<\/strong>. These platforms display information in a clear and simple format, allowing users to understand how air quality changes throughout the day. RS-485 support also makes it easy to integrate monitors into building management systems and industrial setups. By checking air quality through the AQI Dashboard or the AQI Mobile App, users can make informed decisions and create healthier indoor environments.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"498\" src=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-1024x498.png\" alt=\"\" class=\"wp-image-138851\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-1024x498.png 1024w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-300x146.png 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-768x373.png 768w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-1536x747.png 1536w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/12\/Screenshot-2025-12-12-at-3.51.08-PM-1-2-1-2048x996.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Understanding <strong>how an AQI monitor works<\/strong> reveals the technology behind the air quality number shown on a device. Prana Air combines precise sensors, intelligent data processing and reliable calibration to deliver accurate real-time insights. Whether used in a home, office, school or large-scale environmental project, these monitors turn invisible pollutants into meaningful information.<\/p>\n\n\n\n<p>By measuring, analysing and presenting air quality clearly, Prana Air helps users make better decisions about the air they breathe.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding how an AQI monitor works has become increasingly important as air pollution affects daily life in India. PM2.5, gases&hellip;<\/p>\n","protected":false},"author":9477,"featured_media":138866,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1781,2098,1782],"tags":[68,53],"class_list":["post-138651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-quality-monitoring","category-sensor","category-smart-monitoring","tag-air-contaminants","tag-air-quality"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How an AQI Monitor Works: A Closer Look at Prana Air Technology | Prana Air<\/title>\n<meta name=\"description\" content=\"Discover how an AQI monitor works with Prana Air sensors and calibration that deliver accurate, real-time air quality readings.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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